disable instancing when deactivating a vertex declaration

8 jobs for InstancingDeclFix
Status Name Job ID Coverage
  Test
passed clang-c++11-Qt4 #3441
Linux MultiThreads

00:07:22

passed clang-c++11-Qt5 #3445
Linux MultiThreads

00:09:14

passed clang-c++98-Qt4 #3443
Linux MultiThreads

00:07:17

passed clang-c++98-Qt5 #3447
Linux MultiThreads

00:07:28

passed gcc-c++11-Qt4 #3440
Linux

00:04:48

passed gcc-c++11-Qt5 #3444
Linux

00:04:46

passed gcc-c++98-Qt4 #3442
Linux

00:03:29

passed gcc-c++98-Qt5 #3446
Linux

00:03:52